This wasn’t the start to the fall that U.S. freight carriers were hoping for. Major measures of shipping demand turned down sharply in September, WSJ Logistics Report’s Robbie Whelan writes, suggesting that tepid manufacturing and excessive inventories are still weighing on supply chains heading deeper into the fourth quarter. The 5.8% month-to-month decline in the American Trucking Associations truck tonnage measure and the 3.1% drop in the Cass...